Fire Figher Biodata: Summary of Validity and Fairness
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This is a sample report showing the typical evidence of construct validity and criterion related validity that result from the use of biodata.

Overview


Biodata scales were developed and cross-validated to predict each of three primary components of fire fighter job performance. Using a standard cross-validation design, separate biodata predictor scales were developed for (1) physical performance, (2) cognitive performance, and (3) teamwork performance. Each of the three biodata scales was found to be valid and fair for both minority and non-minority fire fighters.

In addition, an equal-weighted composite of the biodata predictors showed statistically significant cross-validity for (1) a single item rating of overall job performance, and (2) an equal-weighted composite of the three primary components of fire fighter job performance. The overall biodata predictor composite showed no significant relationship with minority status of fire fighters in the cross-validation sample. As such, the overall biodata predictor composite should not result in adverse impact in the hiring of minority fire fighters.

Three Primary Components of Fire Fighter Job Performance


The components model of factor analysis was applied to the total rating data file (N=1488) to develop measures for three primary dimensions of fire fighter performance. This analysis resulted in orthogonal (i.e., uncorrelated) scores for three principal components of fire fighter performance.

Criterion Factor 1 (CRITFAC1): Physical Performance
Criterion Factor 2 (CRITFAC2): Cognitive Performance
Criterion Factor 3 (CRITFAC3): Teamwork Performance

An overall fire fighter performance criterion (OVERALL) was collected as a single item rating for overall fire fighter job performance. Using this overall rating as the criterion, correlational analyses conducted in the total validation data file (N = 730) demonstrated that the three principal components of fire fighter job performance (i.e., physical, cognitive, and teamwork) are virtually equal in their importance as determinants of overall fire fighter job performance



The resulting coefficients showed non-significant (p > .05) criterion correlations among the three principal components, which confirms their orthogonality (i.e., uncorrelated measurement). The three primary dimensions of fire fighter job performance showed nearly equal correlations with overall performance (OVERALL), ranging from .43 to .49 (p < .05), which confirms their equal importance as determinants of overall fire fighter job performance.





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